When the stock price increased, it added $5.9 billion in the net worth of Google’s co-founders. Google CEO Larry Page is now worth $3 billion more and Sergey Brin is up $2.93 billion, according to the Forbes Real Time Billionaires Index.

As of September, Larry Page was worth $24.9 billion and Brin was at $24.4 billion. The stock price increase inches them closer towards the $30 billion mark.